Fixing structure of gas turbine splitting ring

A fixed structure, gas turbine technology, applied in stators, mechanical equipment, engine components, etc., can solve the problems of short life, difficult disassembly, complex structure, etc., and achieve the effect of simple structure and convenient installation

Active Publication Date: 2019-04-05
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The efficiency of the gas turbine increases with the increase of the turbine inlet temperature. The turbine inlet temperature of today's heavy-duty gas turbines has reached about 1600K. , such as blades, vane retaining rings, split rings, heat shielding rings, and other working environments are very harsh, resulting in poor reliability and short life of high-temperature components
In order to improve the reliability and life of high-temperature components, the design of the fixing structure is particularly important. The existing technology uses a split ring fixing ring, which has a complex structure and is not easy to disassemble.

Method used

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  • Fixing structure of gas turbine splitting ring
  • Fixing structure of gas turbine splitting ring
  • Fixing structure of gas turbine splitting ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1-6 As shown, a gas turbine split ring fixing structure includes a stator blade holding ring 1, a heat shield ring 2 and a split ring 3;

[0039] The vane holding ring 1 extends axially and circumferentially, and an annular groove is arranged on the end surface of the vane holding ring 1 close to the split ring 3;

[0040] The heat-shielding ring 2 extends in the circumferential direction, one end of which is embedded in the vane holding ring 1, and the other end is located in the channel of the vane holding ring 1, and has protrusions on both sides of the axial direction and extends circumferentially. A certain distance forms a circumferentially extending card slot;

[0041] The split ring 3 extends axially and circumferentially, one end of which is provided with an engaging portion 32, which is engaged and connected with the engaging groove formed by the heat shielding ring 2 and the vane holding ring 1; the other end is provided with a hook portion ...

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PUM

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Abstract

The invention discloses a fixing structure of a gas turbine splitting ring. The fixing structure of the gas turbine splitting ring comprises a blade carrier, a heat insulating ring, and a splitting ring, a clamping part and a pothook part are arranged on the splitting ring, so that the splitting ring is connected with the heat insulating ring and the blade carrier, the splitting ring is divided evenly into a plurality of segmental arcs, a plurality of heat expansion gaps are arranged, and thus the free expansion at a high temperature of the splitting ring is guaranteed. The fixing structure ofthe gas turbine splitting ring has the characteristics that the structure is simple, installation is convenient, and mutual effects caused by interference between parts due to heat expansion are prevented.

Description

technical field [0001] The invention relates to a split ring of a gas turbine, in particular to a fixing structure for a split ring of a gas turbine, and belongs to the technical field of gas turbines. Background technique [0002] The efficiency of the gas turbine increases with the increase of the turbine inlet temperature. The turbine inlet temperature of today's heavy-duty gas turbines has reached about 1600K. , Such as blades, vane holding rings, split rings, heat shielding rings and other working environments are very harsh, resulting in poor reliability and short life of high-temperature components. In order to improve the reliability and life of the high-temperature components, the design of the fixing structure is particularly important. The existing technology uses a split ring fixing ring, which has a complex structure and is not easy to disassemble. [0003] The role of the split ring at the top of the turbine moving blade is to separate the retaining ring of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/12F01D9/04
CPCF01D9/041F01D25/12
Inventor 吴飞曾飞李冠王刚德周盛海陈尧罗跃飞张正直王爽郑庆
Owner DONGFANG TURBINE CO LTD
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